Pressure Sensing and Loading Systems for Use with Liquid Hydrogen 640234

This paper describes the development of a ΔP system for measuring and controlling the mass of liquid hydrogen in a tank to an accuracy of better than 1%. Included are descriptions of the components, an error analysis, and test data. To illustrate the sensitivity and accuracy of the mass measuring system, a description of its use in measuring the weight of air in the empty tank is given. The paper also includes a discussion of the applicability of this system to various industrial measuring, metering, and control problems.


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